Name: Phosphoric Acid
CAS: 7664-38-2
EC Number: 231-633-2
Chemical Formular: H3PO4
Appearance: Odorless
Molecular Weight: 97.994 g/mol
Melting Point: 42.4 °C (108.3 °F; 315.5 K)
Boiling Point: 407 °C (765 °F; 680 K)
Density: 2.030 g/cm3 (25 °C)
Solubility in water: 548 g/100 mL (20 °C)
Exact Mass: 97.977 g/mol
Monoisotopic Mass: 97.977 g/mol
Topological Polar Surface Area: 77.8 A^2
Complexity: 49.8

Phosphoric Acid
99% Phosphoric Acid
99.9% Phosphoric Acid
99.99% Phosphoric Acid
99.999% Phosphoric Acid
Phosphoric Acid,customized specifications


According to the UN GHS revision 8

Version: 1.0

Creation Date: Sep 28, 2020

Revision Date: Sep 28, 2020

SECTION 1: Identification


GHS Product identifier

Product name

Phosphoric Acid


Other means of identification

Product number

Other names



Recommended use of the chemical and restrictions on use

Identified uses

Oxidants and Oxidant Stabilizers

Uses advised against

no data available


Supplier’s details


Elements China Limited


Building 2, No.5555, Shenzhuan Hwy, Shanghai , China



1.5Emergency phone number

Emergency phone number


Service hours

Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

SECTION 2: Hazard identification


Classification of the substance or mixture

Skin corrosion, Sub-category 1B


GHS label elements, including precautionary statements

Signal word


Hazard statement(s)

H314 Causes severe skin burns and eye damage

Precautionary statement(s)

P260 Do not breathe dust/fume/gas/mist/vapours/spray.

P264 Wash … thoroughly after handling.

P280 Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/…


P301+P330+P331 IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.

P363 Wash contaminated clothing before reuse.

P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing.

P316 Get emergency medical help immediately.

P321 Specific treatment (see … on this label).

P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.


P405 Store locked up.


P501 Dispose of contents/container to an appropriate treatment and disposal facility in accordance with applicable laws and regulations, and product characteristics at time of disposal.


Other hazards which do not result in classification

no data available

SECTION 3: Composition/information on ingredients



Chemical nameCommon names and synonymsCAS numberEC number
Phosphoric AcidOrthophosphoric acid7664-38-2231-633-2

SECTION 4: First-aid measures


Description of necessary first-aid measures

If inhaled

Fresh air, rest. Half-upright position. Artificial respiration may be needed. Refer immediately for medical attention.

Following skin contact

Wear protective gloves when administering first aid. Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer immediately for medical attention .

Following eye contact

Rinse with plenty of water for several minutes (remove contact lenses if easily possible). Refer immediately for medical attention.

Following ingestion

Rinse mouth. Give nothing to drink. Do NOT induce vomiting. Refer immediately for medical attention.


Most important symptoms/effects, acute and delayed

Burns on mouth and lips, sour acrid taste, severe gastrointestinal irritation, nausea, vomiting, bloody diarrhea, difficult swallowing, severe abdominal pains, thirst, acidemia, difficult breathing, convulsions, collapse, shock, death. (USCG, 1999)


Indication of immediate medical attention and special treatment needed, if necessary

Irrigate eyes with water; wash contaminated part of body with soap and water; gastric lavage (stomach wash) taking care not to perforate the gastrointestinal tract, if swallowed.

SECTION 5: Fire-fighting measures


Suitable extinguishing media

Use water spray to keep fire-exposed containers cool. Extinguish fire using agent suitable for surrounding fire.


Specific hazards arising from the chemical

Excerpt from ERG Guide 154 [Substances – Toxic and/or Corrosive (Non-Combustible)]: Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Some are oxidizers and may ignite combustibles (wood, paper, oil, clothing, etc.). Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated. For electric vehicles or equipment, ERG Guide 147 (lithium ion batteries) or ERG Guide 138 (sodium batteries) should also be consulted. (ERG, 2016)


Special protective actions for fire-fighters

In case of fire in the surroundings, use appropriate extinguishing media. In case of fire: keep drums, etc., cool by spraying with water. NO direct contact of the substance with water.

SECTION 6: Accidental release measures


Personal precautions, protective equipment and emergency procedures

Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Sweep spilled substance into covered containers. Carefully collect remainder. Then wash away with plenty of water. Then store and dispose of according to local regulations.


Environmental precautions

Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Sweep spilled substance into covered containers. Carefully collect remainder. Then wash away with plenty of water. Then store and dispose of according to local regulations.


Methods and materials for containment and cleaning up

Ventilate area of spill or leak. If in the solid form, collect spilled material in the most convenient and safe manner for reclamation or for disposal in a secured sanitary landfill. If in the liquid form, collect for reclamation or absorb in vermiculite, dry sand, earth, or a similar material.

SECTION 7: Handling and storage


Precautions for safe handling

NO contact with incompatible materials: See Chemical Dangers
Handling in a well ventilated place.
Wear suitable protective clothing.
Avoid contact with skin and eyes.
Avoid formation of dust and aerosols.
Use non-sparking tools.
Prevent fire caused by electrostatic discharge steam.


Conditions for safe storage, including any incompatibilities

Dry. Well closed. Separated from food and feedstuffs and incompatible materials. See Chemical Dangers. Ventilation along the floor.Store in cool, dry, well-ventilated location. Separate from alkalies and most metals.

SECTION 8: Exposure controls/personal protection


Control parameters

Occupational Exposure limit values

TLV: 1 mg/m3, as TWA; 3 mg/m3 as STEL.MAK: (inhalable fraction): 2 mg/m3; peak limitation category: I(2); pregnancy risk group: C.EU-OEL: 1 mg/m3 as TWA; 2 mg/m3 as STEL

Biological limit values

no data available


Appropriate engineering controls

Ensure adequate ventilation.
Handle in accordance with good industrial hygiene and safety practice.
Set up emergency exits and the risk-elimination area.

8.3Individual protection measures, such as personal protective equipment (PPE)

Eye/face protection

Wear face shield or eye protection in combination with breathing protection.

Skin protection

Protective gloves. Protective clothing.

Respiratory protection

Use ventilation, local exhaust or breathing protection.

Thermal hazards

no data available

SECTION 9: Physical and chemical properties and safety characteristics

Physical state

Solid. Crystalline.





Melting point/freezing point

41.1 °C. Atm. press.:Ca. 101 kPa. Remarks:Atmospheric pressure was not recorded.

Boiling point or initial boiling point and boiling range

296.5 °C. Atm. press.:983 hPa.


Noncombustible Solid

Lower and upper explosion limit/flammability limit

no data available

Flash point


Auto-ignition temperature

Not flammable (USCG, 1999)

Decomposition temperature



pH = 1.5 (0.1 N aqueous solution)

Kinematic viscosity

3.86 mPa.s (40% solution at 20 deg C).


Miscible with water

Partition coefficient n-octanol/water


Vapour pressure

25.6 hPa. Temperature:112 °C.;102 hPa. Temperature:165.1 °C.;332 hPa. Temperature:207.3 °C.

Density and/or relative density

1.65 (85%)

Relative vapour density

3.4 (vs air)

Particle characteristics

no data available

SECTION 10: Stability and reactivity



The substance is a medium strong acid. Reacts violently with bases. The substance violently polymerizes under the influence of azo compounds and epoxides. On combustion, forms toxic fumes of phosphorus oxides. Decomposes on contact with alcohols, aldehydes, cyanides, ketones, phenols, esters, sulfides or halogenated organics. This produces toxic fumes. Attacks many metals. This produces flammable/explosive gas (hydrogen – see ICSC 0001).


Chemical stability

no data available


Possibility of hazardous reactions

Not combustible.PHOSPHORIC ACID reacts exothermically with bases. May react with active metals, including such structural metals as aluminum and iron, to release hydrogen, a flammable gas. Can initiate the polymerization of certain classes of organic compounds. Reacts with cyanide compounds to release gaseous hydrogen cyanide. May generate flammable and/or toxic gases in contact with dithiocarbamates, isocyanates, mercaptans, nitrides, nitriles, sulfides, and strong reducing agents. Forms explosive mixture with nitromethane. Reacts violently with sodium tetrahydroborate. In the presence of chlorides can corrode stainless steel to form explosive hydrogen gas. Emits toxic and irritating fumes of oxides of phosphorus when heated to decomposition [Lewis, 3rd ed., 1993, p. 1029].


Conditions to avoid

no data available


Incompatible materials

Reacts with metals to liberate flammable hydrogen gas.


Hazardous decomposition products

Combustion by-products include oxides of phosphorus.

SECTION 11: Toxicological information

Acute toxicity

  • Oral: LD50 – rat (female) – 1.7 mL/100 g body weight.
  • Inhalation: LC50 – rat, mouse, rabbit and guinea pig (male) – 1 217 mg/m³, concentration expressed as phosphorus.
  • Dermal: Dose level – rabbit – > 2 000 mg/kg bw.

Skin corrosion/irritation

no data available

Serious eye damage/irritation

no data available

Respiratory or skin sensitization

no data available

Germ cell mutagenicity

no data available


no data available

Reproductive toxicity

no data available

STOT-single exposure

The substance is corrosive to the eyes, skin and respiratory tract. Corrosive on ingestion. Inhalation may cause asthma-like reactions (RADS). Exposure could cause asphyxiation due to swelling in the throat. Inhalation of high concentrations may cause lung oedema, but only after initial corrosive effects on the eyes and the upper respiratory tract have become manifest. Inhalation of high concentrations may cause pneumonitis. See Notes.

STOT-repeated exposure

The substance may have effects on the upper respiratory tract and lungs. This may result in chronic inflammation and reduced lung function . Mists of this strong inorganic acid are carcinogenic to humans. See Notes.

Aspiration hazard

A harmful contamination of the air will not or will only very slowly be reached on evaporation of this substance at 20°C.

SECTION 12: Ecological information



  • Toxicity to fish: median lethal pH – Lepomis macrochirus – 3 – 3.25 pH – 96 h.
  • Toxicity to daphnia and other aquatic invertebrates: EC50 – Daphnia magna – > 100 mg/L – 48 h.
  • Toxicity to algae: EC50 – Desmodesmus subspicatus (previous name: Scenedesmus subspicatus) – > 100 mg/L – 72 h.
  • Toxicity to microorganisms: EC50 – activated sludge of a predominantly domestic sewage – > 1 000 mg/L – 3 h. Remarks:Respiration rate.


Persistence and degradability

no data available


Bioaccumulative potential

no data available


Mobility in soil

When spilled onto soil, phosphoric acid will infiltrate downward, the rate being greater with lower concentration because of reduced viscosity. … During transport through the soil, phosphoric acid will dissolve some of the soil material, in particular, carbonate-based materials. The acid will be neutralized to some degree with adsorption of the proton and phosphate ions also possible. However, significant amounts of acid will remain for transport. … /If/ reaching the groundwater table, the acid will continue to move in the direction of groundwater flow. A contaminated plume will be produced with dilution and dispersion serving to reduce the acid concentration.


Other adverse effects

no data available

SECTION 13: Disposal considerations


Disposal methods


The material can be disposed of by removal to
a licensed chemical destruction plant or by controlled incineration
with flue gas scrubbing. Do not contaminate water, foodstuffs,
feed or seed by storage or disposal. Do not discharge to sewer systems.

Contaminated packaging

Containers can be triply rinsed (or equivalent) and
offered for recycling or reconditioning.
Alternatively, the packaging can be punctured to
make it unusable for other purposes and then be disposed of
in a sanitary landfill. Controlled incineration
with flue gas scrubbing is possible for combustible packaging materials.

SECTION 14: Transport information


UN Number

ADR/RID: UN3453 (For reference only, please check.)IMDG: UN3453 (For reference only, please check.)IATA: UN3453 (For reference only, please check.)


UN Proper Shipping Name

ADR/RID: PHOSPHORIC ACID, SOLID (For reference only, please check.)IMDG: PHOSPHORIC ACID, SOLID (For reference only, please check.)IATA: PHOSPHORIC ACID, SOLID (For reference only, please check.)


Transport hazard class(es)

ADR/RID: 8 (For reference only, please check.)IMDG: 8 (For reference only, please check.)IATA: 8 (For reference only, please check.)


Packing group, if applicable

ADR/RID: III (For reference only, please check.)IMDG: III (For reference only, please check.)IATA: III (For reference only, please check.)


Environmental hazards



Special precautions for user

no data available


Transport in bulk according to IMO instruments

no data available

SECTION 15: Regulatory information


Safety, health and environmental regulations specific for the product in question

Chemical nameCommon names and synonymsCAS numberEC number
Phosphoric AcidOrthophosphoric acid7664-38-2231-633-2
European Inventory of Existing Commercial Chemical Substances (EINECS)Listed.
EC InventoryListed.
United States Toxic Substances Control Act (TSCA) InventoryListed.
China Catalog of Hazardous chemicals 2015Listed.
New Zealand Inventory of Chemicals (NZIoC)Listed.
Philippines Inventory of Chemicals and Chemical Substances
Vietnam National Chemical InventoryListed.
Chinese Chemical Inventory of Existing Chemical Substances (China
Korea Existing Chemicals List (KECL)Listed.

SECTION 16: Other information

Information on revision

Creation DateSep 28, 2020
Revision DateSep 28, 2020

Abbreviations and acronyms

  • CAS: Chemical Abstracts Service
  • ADR: European Agreement concerning the International Carriage of Dangerous Goods by Road
  • RID: Regulation concerning the International Carriage of Dangerous Goods by Rail
  • IMDG: International Maritime Dangerous Goods
  • IATA: International Air Transportation Association
  • TWA: Time Weighted Average
  • STEL: Short term exposure limit
  • LC50: Lethal Concentration 50%
  • LD50: Lethal Dose 50%
  • EC50: Effective Concentration 50%


  • IPCS – The International Chemical Safety Cards (ICSC), website:
  • HSDB – Hazardous Substances Data Bank, website:
  • IARC – International Agency for Research on Cancer, website:
  • eChemPortal – The Global Portal to Information on Chemical Substances by OECD, website:
  • CAMEO Chemicals, website:
  • ChemIDplus, website:
  • ERG – Emergency Response Guidebook by U.S. Department of Transportation, website:
  • Germany GESTIS-database on hazard substance, website:
  • ECHA – European Chemicals Agency, website:

Other Information

UN number 1805 is used for phosphoric acid solutions.The symptoms of lung oedema often do not become manifest until a few hours have passed and they are aggravated by physical effort. Rest and medical observation are therefore essential.IARC considers mists of strong inorganic acid to be carcinogenic (group 1). However there is no information available on the carcinogenicity of other physical forms of this substance. Therefore no classification for carcinogenicity under GHS has been applied.NEVER pour water into this substance; when dissolving or diluting always add it slowly to the water.

Any questions regarding this SDS, Please send your inquiry to [email protected]

Disclaimer: The above information is believed to be correct but does not purport to be all inclusive and
shall be used only as a guide. The information in this document is based on the present state of our
knowledge and is applicable to the product with regard to appropriate safety precautions. It does not
represent any guarantee of the properties of the product. We as supplier shall not be held liable for any
damage resulting from handling or from contact with the above product.

Chemical Formular:H3PO4
PubChem CID:1004
IUPAC Name:phosphoric acid
Canonical SMILES:OP(=O)(O)O
Globally Harmonized System of Classification
GHS Hazard Statements:H314
Hazard Codes:C
Risk Codes:R34
Precautionary Statement Codes:P280-P303 + P361 + P353-P304 + P340 + P310-P305 + P351 + P338
Flash Point:n/a

Orthophosphoric Acid
Acidum phosphoricum

PhosphorusPhosphorus is a chemical element with the symbol P and atomic number 15.
Elemental phosphorus exists in two major forms, white phosphorus and red phosphorus, but because it is highly reactive, phosphorus is never found as a free element on Earth.
It has a concentration in the Earth’s crust of about one gram per kilogram (compare copper at about 0.06 grams). With few exceptions, minerals containing phosphorus are in the maximally oxidized state as inorganic phosphate rocks.

OxygenOxygen is the chemical element with the symbol O and atomic number 8, meaning its nucleus has 8 protons.
Oxygen is a member of the chalcogen group on the periodic table, a highly reactive nonmetal, and an oxidizing agent that readily forms oxides with most elements as well as with other compounds.
Dioxygen is used in cellular respiration and many major classes of organic molecules in living organisms contain oxygen, such as proteins, nucleic acids, carbohydrates, and fats, as do the major constituent inorganic compounds of animal shells, teeth, and bone.
Oxygen was isolated by Michael Sendivogius before 1604, but it is commonly believed that the element was discovered independently by Carl Wilhelm Scheele, in Uppsala, in 1773 or earlier, and Joseph Priestley in Wiltshire, in 1774.

HydrogenHydrogen is a chemical element with symbol H and atomic number 1. Classified as a nonmetal, hydrogen is a gas at room temperature.
With a standard atomic weight of 1.008, hydrogen is the lightest element in the periodic table. Hydrogen is the most abundant chemical substance in the Universe, constituting roughly 75% of all baryonic mass.
Hydrogen is estimated to make up more than 90% of all the atoms three quarters of the mass of the universe! This element is found in the stars, and plays an important part in powering the universe through both the proton-proton reaction and carbon-nitrogen cycle. Stellar hydrogen fusion processes release massive amounts of energy by combining hydrogens to form helium.
Hydrogen is the primary component of Jupiter and the other gas giant planets. At some depth in the planet’s interior the pressure is so great that solid molecular hydrogen is converted to solid metallic hydrogen.
In 1973, a group of Russian experimenters may have produced metallic hydrogen at a pressure of 2.8 Mbar. At the transition the density changed from 1.08 to 1.3 g/cm3. Earlier, in 1972, at Livermore, California, a group also reported on a similar experiment in which they observed a pressure-volume point centered at 2 Mbar. Predictions say that metallic hydrogen may be metastable; others have predicted it would be a superconductor at room temperature.

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